JapaneseCalendar.AddYears メソッド
アセンブリ: mscorlib (mscorlib.dll 内)

Dim instance As JapaneseCalendar Dim time As DateTime Dim years As Integer Dim returnValue As DateTime returnValue = instance.AddYears(time, years)
戻り値
指定した DateTime に指定した年数を加算した結果の DateTime。


結果として得られる日が結果の年の結果の月に対して有効な日でない場合は、結果として得られる DateTime の日付部分が影響を受けます。この日付は、結果の年の結果の月にとって有効な最後の日付に変更されます。結果として得られる DateTime の月の部分は、指定した DateTime の値と同じままです。結果として得られる年が、指定した DateTime の時代 (年号) の範囲外の場合、結果として得られる DateTime の時代 (年号) の部分に影響します。結果として得られる DateTime の時刻の部分は、指定した DateTime の値と同じままです。
たとえば、2 月 (February) の日数は 28 日ですが、閏年だけは 29 日になります。指定した日付が閏年の 2 月 (February) 29 日で years の値が 1 の場合、結果として得られる日付は翌年の 2 月 (February) 28 日となります。

DateTime のいくつかのコンポーネントの値を和暦で表示する例を次に示します。
Imports System Imports System.Globalization Public Class SamplesJapaneseCalendar Public Shared Sub Main() ' Sets a DateTime to April 3, 2002 of the Gregorian calendar. Dim myDT As New DateTime(2002, 4, 3, New GregorianCalendar()) ' Creates an instance of the JapaneseCalendar. Dim myCal As New JapaneseCalendar() ' Displays the values of the DateTime. Console.WriteLine("April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:") DisplayValues(myCal, myDT) ' Adds two years and ten months. myDT = myCal.AddYears(myDT, 2) myDT = myCal.AddMonths(myDT, 10) ' Displays the values of the DateTime. Console.WriteLine("After adding two years and ten months:") DisplayValues(myCal, myDT) End Sub 'Main Public Shared Sub DisplayValues(myCal As Calendar, myDT As DateTime) Console.WriteLine(" Era: {0}", myCal.GetEra(myDT)) Console.WriteLine(" Year: {0}", myCal.GetYear(myDT)) Console.WriteLine(" Month: {0}", myCal.GetMonth(myDT)) Console.WriteLine(" DayOfYear: {0}", myCal.GetDayOfYear(myDT)) Console.WriteLine(" DayOfMonth: {0}", myCal.GetDayOfMonth(myDT)) Console.WriteLine(" DayOfWeek: {0}", myCal.GetDayOfWeek(myDT)) Console.WriteLine() End Sub 'DisplayValues End Class 'SamplesJapaneseCalendar 'This code produces the following output. ' 'April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: ' Era: 4 ' Year: 14 ' Month: 4 ' DayOfYear: 93 ' DayOfMonth: 3 ' DayOfWeek: Wednesday ' 'After adding two years and ten months: ' Era: 4 ' Year: 17 ' Month: 2 ' DayOfYear: 34 ' DayOfMonth: 3 ' DayOfWeek: Thursday
using System; using System.Globalization; public class SamplesJapaneseCalendar { public static void Main() { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = new DateTime( 2002, 4, 3, new GregorianCalendar() ); // Creates an instance of the JapaneseCalendar. JapaneseCalendar myCal = new JapaneseCalendar(); // Displays the values of the DateTime. Console.WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:" ); DisplayValues( myCal, myDT ); // Adds two years and ten months. myDT = myCal.AddYears( myDT, 2 ); myDT = myCal.AddMonths( myDT, 10 ); // Displays the values of the DateTime. Console.WriteLine( "After adding two years and ten months:" ); DisplayValues( myCal, myDT ); } public static void DisplayValues( Calendar myCal, DateTime myDT ) { Console.WriteLine( " Era: {0}", myCal.GetEra( myDT ) ); Console.WriteLine( " Year: {0}", myCal.GetYear( myDT ) ); Console.WriteLine( " Month: {0}", myCal.GetMonth( myDT ) ); Console.WriteLine( " DayOfYear: {0}", myCal.GetDayOfYear( myDT ) ); Console.WriteLine( " DayOfMonth: {0}", myCal.GetDayOfMonth( myDT ) ); Console.WriteLine( " DayOfWeek: {0}", myCal.GetDayOfWeek( myDT ) ); Console.WriteLine(); } } /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
using namespace System; using namespace System::Globalization; void DisplayValues( Calendar^ myCal, DateTime myDT ) { Console::WriteLine( " Era: {0}", myCal->GetEra( myDT ) ); Console::WriteLine( " Year: {0}", myCal->GetYear( myDT ) ); Console::WriteLine( " Month: {0}", myCal->GetMonth( myDT ) ); Console::WriteLine( " DayOfYear: {0}", myCal->GetDayOfYear( myDT ) ); Console::WriteLine( " DayOfMonth: {0}", myCal->GetDayOfMonth( myDT ) ); Console::WriteLine( " DayOfWeek: {0}", myCal->GetDayOfWeek( myDT ) ); Console::WriteLine(); } int main() { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = DateTime(2002,4,3,gcnew GregorianCalendar); // Creates an instance of the JapaneseCalendar. JapaneseCalendar^ myCal = gcnew JapaneseCalendar; // Displays the values of the DateTime. Console::WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar:" ); DisplayValues( myCal, myDT ); // Adds two years and ten months. myDT = myCal->AddYears( myDT, 2 ); myDT = myCal->AddMonths( myDT, 10 ); // Displays the values of the DateTime. Console::WriteLine( "After adding two years and ten months:" ); DisplayValues( myCal, myDT ); } /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */
import System.*; import System.Globalization.*; public class SamplesJapaneseCalendar { public static void main(String[] args) { // Sets a DateTime to April 3, 2002 of the Gregorian calendar. DateTime myDT = new DateTime(2002, 4, 3, new GregorianCalendar()); // Creates an instance of the JapaneseCalendar. JapaneseCalendar myCal = new JapaneseCalendar(); // Displays the values of the DateTime. Console.WriteLine("April 3, 2002 of the Gregorian calendar equals" + " the following in the Japanese calendar:"); DisplayValues(myCal, myDT); // Adds two years and ten months. myDT = myCal.AddYears(myDT, 2); myDT = myCal.AddMonths(myDT, 10); // Displays the values of the DateTime. Console.WriteLine("After adding two years and ten months:"); DisplayValues(myCal, myDT); } //main public static void DisplayValues(Calendar myCal, DateTime myDT) { Console.WriteLine(" Era: {0}", System.Convert.ToString(myCal.GetEra(myDT))); Console.WriteLine(" Year: {0}", System.Convert.ToString(myCal.GetYear(myDT))); Console.WriteLine(" Month: {0}", System.Convert.ToString(myCal.GetMonth(myDT))); Console.WriteLine(" DayOfYear: {0}", System.Convert.ToString(myCal.GetDayOfYear(myDT))); Console.WriteLine(" DayOfMonth: {0}", System.Convert.ToString(myCal.GetDayOfMonth(myDT))); Console.WriteLine(" DayOfWeek: {0}", System.Convert.ToString(myCal.GetDayOfWeek(myDT))); Console.WriteLine(); } //DisplayValues } //SamplesJapaneseCalendar /* This code produces the following output. April 3, 2002 of the Gregorian calendar equals the following in the Japanese calendar: Era: 4 Year: 14 Month: 4 DayOfYear: 93 DayOfMonth: 3 DayOfWeek: Wednesday After adding two years and ten months: Era: 4 Year: 17 Month: 2 DayOfYear: 34 DayOfMonth: 3 DayOfWeek: Thursday */

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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JapaneseCalendar クラス
JapaneseCalendar メンバ
System.Globalization 名前空間
System.DateTime
AddMonths
Calendar.AddWeeks
Calendar.AddDays
Calendar.AddHours
Calendar.AddMinutes
Calendar.AddSeconds
Calendar.AddMilliseconds
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